Q: What are the prime factors of the number 979,839?

 A: 3, 7, 103, 151

Why are those the prime factors of the number 979,839?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 979,839

979,839
Factor Arrows
3326,613
Factor Arrows
3108,871
Factor Arrows
715,553
Factor Arrows
103151

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

3, 7, 103, 151

We can check our work by multiplying all of the prime factors together: 3 x 3 x 7 x 103 x 151 = 979,839

This can also be written as 32 x 71 x 1031 x 1511 = 979,839

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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